42845578 has 8 divisors (see below), whose sum is σ = 64410372. Its totient is φ = 21375456.

The previous prime is 42845567. The next prime is 42845581. The reversal of 42845578 is 87554824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 426409 = 6513^2 + 653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22525 + ... + 24352.

Almost surely, 2^42845578 is an apocalyptic number.

42845578 is a deficient number, since it is larger than the sum of its proper divisors (21564794).

42845578 is a wasteful number, since it uses less digits than its factorization.

42845578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47336.

The product of its digits is 358400, while the sum is 43.

The square root of 42845578 is about 6545.6533669298. The cubic root of 42845578 is about 349.9199218160.

The spelling of 42845578 in words is "forty-two million, eight hundred forty-five thousand, five hundred seventy-eight".